Midi Clock (PPQ) and micros() ? Reliable?

[WilliamK]

Guys, I'm trying to get a good midi clock with 16 to 96 PPQ, but somehow, it doesn't seem that the micros() is returning perfect timing information. Any comments on this?

Here's an example.

ppqtime = 60000000 / (bpm*PPQ);  // (60 x 1,000,000) / (BPM*PPQ) - done at SETUP or Time BPM Changed

// In the LOOP //

if (micros() >= prevtime) 
{
     prevtime += ppqtime;
     // send notes now //
}

Best Regards, WilliamK

[CrossRoads]

I've only seen examples used like this:

unsigned long currentTime;
unsigned long prevtime;
:
:

currentTime = micros();

if currentTime >= prevtime)
{ }

Try it that way.